Performance of the stereopsis with and without external confidence threshold.

is the multi–modal similarity threshold for stereo matching; is the external confidence threshold; and are the total number of true and false correspondences (respectively) selected by these thresholds.

三者分别为：用于立体匹配（stereo matching）的多模态相似度阈值、外部置信度阈值，以及通过上述阈值筛选得到的真匹配对与假匹配对的总数量，二者分别对应真、假匹配对的总数。